Musician, producer, multi-instrumentalist, rapper. Scored ten gold, four platinum, two double platinum, and one diamond record sales. One of the most talented and hard-working Polish artists, following his own artistic path for years now. Considered Poland’s hip-hop scene most achieved personality. Appreciated by Polish legendary musicians Czeslaw Niemen and Michał Urbaniak (with whom he collaborated on several occasions). Artistically active outside of Poland having collaborated with U.S. (Marco Polo, Evidence, El da Sensei, Cadillac Dale, Jeru The Damaja, Torae), British (Skill Mega, Dirty Diggers), and Dutch (Joe Kickass, Sacha Vee) artists. Being a classically trained graduate of Music Academy in Lodz (violin as leading instrument), O.S.T.R. creatively incorporates his academic skills into his music.